diff --git a/README.md b/README.md
index 2927425..4ad8ec5 100644
--- a/README.md
+++ b/README.md
@@ -33,6 +33,7 @@ You should limit to 6 account per IP, and DON'T USE outlook account, they are ba
 
 installation recommandation :
 ```
+ sudo apt-get install xdg-utils -y
 curl -sSLO https://download-installer.cdn.mozilla.net/pub/firefox/releases/91.9.1esr/linux-x86_64/en-US/firefox-91.9.1esr.tar.bz2
 tar -xjf firefox-91.9.1esr.tar.bz2
 sudo mv firefox /opt/